﻿<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>computed()方法</title>
</head>
<body>
<div id="app">
    <p>原始字符串: {{ message }}</p>
    <p>反转字符串: {{ reversedMessage }}</p>
</div>
<script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
<script>
    const {ref, computed} = Vue;
        const vm = Vue.createApp({
             setup(){
        	  const message = ref('人世几回伤往事，山形依旧枕寒流');
        	  const reversedMessage = computed(() =>
        	       message.value.split('').reverse().join('')
        	   );
        	   return {
        	        message,
        	        reversedMessage
        	   }
        	}
       }).mount('#app');
</script>
</body>
</html>
